[gnome-text-editor] css: fix positioning of check image

[Christian Hergert <chergert src gnome org>]

commit df4af1fa36a61efb7901b32da5d3eea6c1aac613
Author: Christian Hergert <chergert redhat com>
Date:   Fri Nov 19 12:47:18 2021 -0800

    css: fix positioning of check image
    
    This can be aligned with the border by using negative margins.
    
    Related #225

 src/TextEditor.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/TextEditor.css b/src/TextEditor.css
index 83fde39..b901e52 100644
--- a/src/TextEditor.css
+++ b/src/TextEditor.css
@@ -53,7 +53,7 @@
   box-shadow: none;
   min-width: 12px;
   min-height: 12px;
-  margin: 24px 0 0 24px;
+  margin: 24px -4px -4px 24px;
   padding: 2px;
 }
 .org-gnome-TextEditor checkbutton.theme-selector radio:checked {